OK I was a bad boy. I have let our 94 Vectra sit in the back yard for the last 6 months. Yesterday while we were putting silicone around the windows we tried to start the onan 7000 generator. The unit was plugged in when I first hit the start button, it cranked but did not fire. I unplugged it and started the main engine to give the battery more cranking power but the generator would not start. Suggestions please.

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That 30 seconds is good to know. My 5500 Marquis sometimes starts then dies. I hold the prime for 5-10 seconds and it still starts and dies for a couple times. I've done it at the generator till I hear the pump quit clicking and it still takes a couple of primes.